Stem for swing-ring watchcases.



E. M. BOSCH.

STEM FOR SWING RING WATCHCASES. APPLICATION FILED OCT. 6. 1914.

1,214,994. Patented Feb. 5,1917.

EIMBosch EDWARD M. BOSCH, F WIN NEMUCCA, NEVADA.

STEM non SWING-RING wAroHoAsns.

Specification of LettersPatent.

Patented Feb.6, 1917.

Application filedOctober 6, 1914. Serial No. 865,364.

To all whom it may concern:

Be it known that I, EDWARD M. Boson, a citizen of the United States, residing at WVinnemucca, in the county of Humboldt and State of Nevada, have invented certain new and useful Improvements inStems for Swing-Ring VVatchcases; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to stems for swing ring watch cases, and one of the principal objects of the invention is to provide reliable and eflicient means for preventing the denting or marring of the squared portion of the stem which extends into the wind socket and the set socket of the movement.

The stems as usually constructed are provided with a single notch, and when the stem is withdrawn sufficiently to permit the works to swing on its hinge, the squared inner end of the stem is liable to come into contact with a portion of the ring when the ring is closed into the case and the squared portion of the stem is liable to become bent or marred so as to interfere with its efiiciency and proper operation.

The principal object of this invention is to provide a stem which can be more fully withdrawn from the ring, so that when the ring is opened or closed there will be no interference with the squared portion of the stem to bend or mar it, and to also lead to easy opening and closing of the ring.

The foregoing and other objects may be attained by means of the construction illustrated in the accompanying drawing, in which,

Figure 1 is a detail sectional view of the bearing for the stem, the hinged portion of the swing case, and the stem being shown in elevation,

Fig. 2 is a perspective view of the spring sleeve in the stem bearing,

Fig. 3 is a sectional view illustrating the position of the inner end of the stem with relation to the hand setting arbor when the stem has been pulled out to permit the swing ring to be opened.

Referring to the drawing, the numerall designates the case of a swing ring watch, and 2 is the ring hinged at 3 to the top of the case. The ring 2 contains the movement of the watch. The hearing or casing 4 for the stem 5 may be of the usual or any suitthe stem 5 when able construction provided witha cap 6 and acrown 7 as usual. Thestem 5 is provided with a threaded outer-end 8 on which is fitted the crown 7 and a suitable washer or nut 9 fits against a shoulder on the stem 5. The nut 9 is threaded on its periphery and fitted to the interior threads in the cap 6. The stem is provided with a reduced portion 10 and a notch 11 adapted to be engaged by the inturned ends of a spring slitted sleeve 12, said sleeve having a split collar 13 which is screw threaded into the stem bearing or casing l. The spring sleeve is provided with a reduced portion 14: and astill further reduced portion 15 having inwardly turned terminal edges 16. The sleeve is provided with two slits 17 extending longitudinally thereof which imparts resiliency to the two inwardly turned edges '16. The stem 5 is provided with a second notch or recess 11 and the inner end of the stem is provided with a squared portion 18. The hand setting and spring winding mech anism is of the usual construction, and includes the square bored hand setting arbor 19. The squared portion 18 of the stem 5 extends through an opening d in the ring 2, and slidably engages in the socket of the arbor 19.

The ring a is of the usual construction and secured to the casing 4 in the usual manner.

From the foregoing it will be obvious that partially withdrawn by pulling outward upon the crown 7, the illturned ends 16 will engage the notch, 11, in the stem 5 and the squared portion 18 will then be in such a position that by turning the crown 7 the watch hands may be set. WVhen the stem is pushed all the way in and the inturned ends 16 engage the notch 11", the watch may then be wound by turning the crown 7. When it is desired to gain access to the movement, the stem 5 is withdrawn until the inturned ends 16 of the spring engage the notch 11*, and the bezel is removed from the case by pushing the stem inward, the movement ring will swing upon the hinge 3 and give access to the movement. When the stem is fully withdrawn and the spring 16 engages the notch 11*, the ring can be closed without interference with the squared end 18 of the stem. The distance from the free end of the squared portion 18 to the notch 11, is such that, when the stem is pulled outwardly until the inturned ends 16 of the sleeve 12 engage the notch 11 the free end of the squared portion 18 is not fully withdrawn from the socket 19 but enough of it is withdrawn to permit the swing ring 2 to be opened. It will therefore, be apparent that when the stem is in this position, the swing ring 2 may be opened or the hands set. It will also be apparent that with the stem in this position, the hands may be set as soon as the swing ring 2 has been closed. When the swing ring 2 is all but fully closed the free end of the squared portion 18 starts to engage the arbor 19 and by slightly turning the crown T the free end of the squared portion is caused to easily engage in the arbor 19.

Various changes may be made in the details of construction without departing from the spirit and scope of the invention as defined in the claim.

What is claimed is A watch including a case provided at its top portion with a bearing, a movement carrying ring hinged to the top of the case and provided with an opening registering Copies of this patent may be obtained for five cents each, by addressing the with the socket of the setting arbor of said movement, a notch engaging sleeve carried by the bearing, a stem slidably and rotatably mounted in the bearing and passing through said sleeve, and a crown secured to the outer end of said stem, said stem being provided with a squared inner end passing through said opening into said setting arbor and with setting and winding notches, said stem having a third notch located between said second notch and the free end of said squared portion and said third notch being so spaced from the free end of said squared portion, that when the stem is pulled outwardly to bring the said third notch into engagement with the said sleeve, the squared portion will not be fully withdrawn but will be sufficiently withdrawn from said setting arbor to permit the movement ring to be swung into opened position.

In testimony whereof I afiix my signature in presence of two witnesses.

EDWARD M. BOSCH.

Witnesses:

F. G. KRENKEL, DORA M. WATERS.

Commissioner of Patents,

Washington, D. 6. 

